These will begin to ship on October 4th 2023. This is a limited edition pen which is the third in a series aligning with the previous TWSBI Aurora and TWSBI Draco. This pen has a deep multicolored acrylic body with rose gold accents. There is a large ink viewing window so it is easy to know when it is time to refill! This pen is a piston filler which means it will require an ink bottle to use. This pen can not use cartridges. 

A quick no brainer guide in choosing nib sizes in an overly complicated fountain pen world:

If you write small, go with an EF
For the normal writer, F is the most popular
If you tend to lean on a bigger font, M will be perfect
B is for statements!! Sign a check in B, write a header in B, do some coloring/shading in B.